Improvement in sash-fasteners



s. Russ.

SASH-FASTENER.

No. 192,529, Patented June 26,1877.

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To all whom it may concern:

Uivrrnn STATE STEPHEN RUSH, TYRONE, PENNSYLVANIA.

IMPROVEMENT IN SA$H-FASTENERS.

Specification forming part of Letters Patent No. 192,529, dated June 26,1877 application filed May 26, 1877.

Be it known that I, STEPHEN BUSH, of Tyrone, in the county of Blair and,State of Pennsylvania, have invented certain new and useful Improvementsin Sash Looks or Fasteners, of which the following is aspecification:

My invention relates to that class of sash looks or fasteners in whichthe lock is inserted in a mortise in the window-casing, its bolt beingadapted to engage in notches or recesses formed in the side rail of thesash to lock it in position.

The object of my invention is to provide a cheap, simple, and reliablelock, which shall be reversiblethat is, capable of being applied withequal advantage upon either side'of the window, and so constructed thatthe act of releasing the bolt to permit of the movement of the sash inone direction will reset and adapt it automatically to prevent amovement of the sash in the reverse or opposite direction.

The subject-matter claimed hereinafter specifically will be designated.

In the accompanying drawings, Figure l is a view of a window, from theinside, with my improved lock applied thereto, a portion of the casingand sash being broken away to show the manner of applying the lock andof its engagement with the sash, the lock being in section on the line 11 of Fig. 4, with its bolt in position to prevent a downward movement ofthe sash; Fig. 2, a vertical section through the window, showing a lockfor each sash, and the key or handle for operating them; Fig. 3, a sideview of the lockdetached; and Fig. 4, a perspective view of the same,with an escutcheon adapted to be applied to the window-casing to protectthe handle by which the bolt is operated.

The lock-casing A may be of the usual construction for mortise-locks,and is divided centrally and longitudinally by a partition-plate, a. Inone of the compartments thus formed by the partition-plate is centrallyjournaled a lever, B, provided with bent or hooked ends 12, either oneof which, when the lever is vibrated upon its axis, may project beyondthe face-plate of the lock to constitute a bolt, the face-plate beingslotted longitudinally for the purpose.

The shaft (J, upon which the lever B is keyed,

rocks in hearings in the casing, and is provided,

it exerts its pressure, with a plate, f, projecting beyond it face insuch manner as to confine the spring between it and the partition-plateof the lock.

Toprovide a convenient means for controlling the vibration or to reversethe bolt 1 mount upon the end of the shaft upon which it is keyed acrank, handle, or key, E, to which access is readily had, when the lockis in place in the casing, through a slot in an escutcheonplate, F. 7

By the movement of the handle the shaft is rocked in its bearings, andone end or the other, as the case may be, of the bolt is thrust outwardbeyond the face of the lock, the withdrawal of one end being followed byan ejectment of the other, and whichever end may be thrown out isprevented from accidental withdrawal by the tensionofthe spring, whichacts upon the cam on the shaft, and prevents said shaft rocking in itsbearings.

It will be obvious that locks constructed as shown and described may beapplied with equal advantage upon either side of the window, and thatthe lock of one sash will not interfere with that of another.

1 will now describe the operation of my improved lock as applied to awindow, reference being had to Fig. 1 of the drawings, which shows thedevice as adapted to fasten the low or sash. When the upper end of thebolt is thrown out, as in said figure, and engages in one of a series.of notches cut in the side rail of the sash in a well-known way, saidsash is securely locked from a downward movement,- any force exerted inthat direction tending to force the bolt end still farther outward,binding it tightly in the recess, the force or thrust on the bolt beingsustained by the shaft or journal upon which it is mounted. The sash is,however, free to be moved in an upward direction, the bolt yieldingfreely in that direction. When it is desired to lower the sash gaged ina notch in the sash any pressure applied thereto in ail-upward directionbinds the bolt more tightly.

Having th as fully described my invention, what I claim as of myown'inv'entio'n isl. The combination of the casing, the division-plate,forming two compartments therein, a vibrating lever or bolt mounted inoneoff the compartments, and a spring for preven'ti ing accidentalwithdrawal of the bolt, when shot, mounted in the other compartment,substantially as described.

2. The combination, substantially as hereinbefore set forth, of thecasing, the vibrating '2 teases lever mounted therein, either end ofwhich is adapted to constitute a bolt, its shaft,the cam or projectionon the shaft, a spring acting, on the cam, and a handle or key forcontrolling the vibration of the lever.

3. The combination of the casing, its division-plate,the-shaft rockingin hearings in the casing, the cam mounted thereon, the spring acting onthecam, and a plate carried by the shaft or cam, between which and thedivisionplate the spring is confined to prevent lateral displacementthereof. 7

In testimony whereof -I h'ave hereunto subscribed my name.

STEPHEN RUSH.

Witnesses: Y

J. S. LEISENRI'NG, JOHN F. PARET.

